# Quilt Binding Calculator

Calculate how much binding fabric you need for your quilt. Enter quilt dimensions, strip width, and fabric width to get strips needed and total yardage.

## What this calculates

Almost done with your quilt? This calculator figures out exactly how much binding fabric you need. Enter your quilt dimensions, choose your strip width, and get the number of strips to cut plus the total fabric yardage to buy.

## Inputs

- **Quilt Length** (inches) — min 1, max 200
- **Quilt Width** (inches) — min 1, max 200
- **Binding Strip Width** — options: 2" strips (narrow binding), 2.25" strips (standard double-fold), 2.5" strips (most popular), 2.75" strips (thicker quilts), 3" strips (extra-wide binding) — 2.5 inches is the most common strip width
- **Extra for Joins & Corners** (inches) — min 6, max 24 — 10-12 inches is standard; add more for mitered corners
- **Fabric Width (WOF)** (inches) — min 36, max 60 — Usable width of fabric (typically 40-42 inches after trimming selvage)

## Outputs

- **Quilt Perimeter**
- **Total Binding Needed**
- **Strips to Cut**
- **Fabric Needed**
- **Fabric Needed**

## Details

The binding calculation follows these steps:

  - Perimeter = 2 x (Length + Width)

  - Total binding = Perimeter + extra for joins and corners (usually 10-12")

  - Strips needed = Total binding / Usable fabric width (WOF)

  - Fabric yardage = Strips needed x Strip width / 36

Common Quilt Sizes

  SizeDimensionsPerimeter
  Baby36" x 52"176"
  Throw55" x 65"240"
  Twin68" x 86"308"
  Queen86" x 96"364"
  King105" x 96"402"

Binding Tips

  - 2.5" strips are the most popular width for double-fold binding

  - Straight grain works for straight edges; bias is needed for curved edges

  - Join strips at 45-degree angles for less bulk and a cleaner finish

  - Always buy a little extra fabric to account for cutting mistakes

## Frequently Asked Questions

**Q: How wide should quilt binding strips be?**

A: The most popular width is 2.5 inches, which produces a standard double-fold binding about 3/8 inch wide on the finished quilt. For thicker quilts (like those with high-loft batting), go up to 2.75 or 3 inches. For a narrower, more delicate look, try 2 or 2.25 inches.

**Q: Should I cut binding on the bias or straight grain?**

A: Straight grain binding works perfectly for quilts with straight edges and square corners. Bias binding (cut at 45 degrees) is necessary for quilts with curved edges because it stretches to follow curves without puckering. Bias requires more fabric.

**Q: How much extra binding should I add beyond the perimeter?**

A: Add 10-12 inches of extra binding beyond the quilt perimeter. This accounts for the joining overlap where your binding strips start and end meet, plus a small margin for joining the WOF strips together at 45-degree angles.

**Q: What does WOF mean in quilting?**

A: WOF stands for Width of Fabric, which is the usable width from selvage to selvage. Standard quilting fabric is 44-45 inches wide, but after trimming the selvages, the usable WOF is typically 40-42 inches.

**Q: How do I calculate binding for a round quilt?**

A: For a circular quilt, the perimeter (circumference) is the diameter times pi (3.14). So a 60-inch round quilt needs about 188 inches of binding plus the 10-12 inch extra. You should use bias binding for a circular quilt since it needs to curve smoothly.

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Source: https://vastcalc.com/calculators/everyday/quilt-binding
Category: Everyday Life
Last updated: 2026-04-08